Preludes to dark energy: zero-point energy and vacuum speculations Helge Kragh OriginalPaper 18 December 2011 Pages: 199 - 240
Newton’s De gravitatione: a review and reassessment J. A. Ruffner OriginalPaper 23 March 2012 Pages: 241 - 264
Further adventures of the Rome 1594 Arabic redaction of Euclid’s Elements Gregg De Young OriginalPaper 18 April 2012 Pages: 265 - 294
The early proofs of the theorem of Campbell, Baker, Hausdorff, and Dynkin Rüdiger AchillesAndrea Bonfiglioli OriginalPaper 03 April 2012 Pages: 295 - 358